Improved insulator for electrodes



L.. ENGLER & E. P. KRAUSS. INSULATOR.

No. 28,268. Patented May 15, 1860.

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LOUIS ENGLER AND ERNEST F. KRAUSS, OF PARIS, FRANCE.

Specification forming part of Letters Patent No. 28,963, dated May15, 1860.

To all whom it may concern:

Be it known that we, LOUIS ENGLER and ERNEST Farimiarc Knnuss, of Paris, in the Empire of France, manufacturers, have invented a' new or Improved Insulator for Electric Conductors; and we do hereby declare that the following is a full, clear, and exact description of "the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side view of an insulator constructed according to our invention. Fig. 2 is a transverse section of the same.

, Similar letters of reference indicate corre sponding parts in both figures.

Our improved insulator is intended more especially for supporting telegraph-wires in the air; but it may be used for other electric conductors.

, It oonsistsof a ring of enameled iron attached to a suitable arm, and having provided for the insertion of the wire or other conductor a v shaped opening, the throat of which projects within the circle of the ring, and having cemented within it a lining of glass, substantially as herein described.

A represents the iron ring of the insulator, cast in the same piece with the arm B and the plate 0, which receives the screws or other fastenings by which to attach the insulator to the post or other support.

a is the V-shaped opening in the ring for the introduction of the conductor 1), said opening having its throat c c projecting some distance into the ring.

D is the lining of glass, fitted to the interior of the ring A, and extending all round the same as far as. the inwardlyprojecting sides of the throat c c, which project some distance inward beyond the interior of the lining to form guards to prevent the wire slipping out of the insulator. This lining D is cemented into the ring A, so as to be permanently attached thereto. Various kinds of cement mightbe used for this purpose; but as we propose in all cases to enamel the casting A B C with a vitreous enamel, the simplest mode of cemen ting the lining into the ring will be to make use of an enamel that will fuse at a lower temperature than the glass lining, and after the enamel has been applied to insert the lining, and then heat the insulator to a sufficient degree to melt the enamel, by which means the enamel is made to constitute the cement to secure the lining.

What weclalm as ourinvention, and desire to secure by Letters Patent, is-

The insulator consistin g of an enameled iron ring having a lining of glass permanently cemented within it, and a V-shaped opening, a, the sides c c r whose throat project inwardly beyond the in. rior of the lining, substantially as herein described.

Ls. ENGLE'R. E; F. KRAUSS;

Witnesses:

Gno. HUTTON, A. GRISOIL. 

